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Acoustic memory profiler ASPG


The tool has the following modifications by max operating temperature Tmax and upper value of borehole hydrostatic pressure Pmax :
  T max =90 °C, Pmax= 80 MPa;
  T max =120 °C, Pmax= 80 MPa;
Designed for open hole cross-section study (without usage of logging cable).

Used in oil and gas wells including horizontal wells,with nominal diameter from 124 to 160 mm, filled with oil- or water-base mud. The tool is conveyed into the well with a drilling string, logging cable is not required.

borehole profiling by eight inner radii in each cross-section. 

There are eight measuring piezoelectric converters located (with the shift of 45°) along the generating line of the tool’s sonde. Resonance frequency of piezoelectric converters is 400 kHz ±50 kHz.


 Measured parameters Range Error
Eight radii of a borehole 54÷120 mm ±2 mm
Borehole mean diameter 108÷240 mm ±4 mm


 General specifications
Tool length, mm 3100 not more than
Tool diameter, mm 90 not more than
Tool weight, kg 115 not more than
Power supply, self-contained, V 12  
Ambient operating temperature range, °C from -10 to +120 not more than
Max operating pressure, MPa 80 not more than
Borehole diameter, mm 124÷160  
Logging speed, m/ hr 600  
Operating time in memory mode,  hours in record mode 8 not less than
Records frequency, pollings per sec 1  
Location on the drilling tool